split will work, join all the array cells together into one string, then split on the ! characters
Update: some Monks have rained on my parade by noting that this may produce empty elements. :-) You can filter out empty elements with map or grep -(see below)
my $string = join( '', @mycells);
my @result = split( '!', $string);
# remove empty elements, using something like....
my @finalResult = grep { $_ ne '' }, @result;
If you spot any bugs in my solutions, it's because I've deliberately left them in as an exercise for the reader! :-)
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